Flushing-valve.



D. E. GULICK.

FLUSHING VALVE.

APPLICATION FILED MAR. 16, 1918.

Patented Mar. 18,1919.

3 SHEETS-SHEET I.

u.- E. GULICK. FLUSHING VALVE.

APPLICATION FILED MAR. 16. 1918.

Patented Mar. 18, 1919.

3 SHEETS-SHEET 3- Xxfi.

" rnosmmvenvn.

Specification of Letters htent.

Appliesflon filed Hersh it, me. semi is... states.

To all whom it may concern:

Be it known that I, DAVID E. Gnmon, a citizen of the United States, residin sin the city and county of San Francisco, tote of California, have invented certain new and useful Improvements in Flushing-Valves, whereof the following is a specification.

This invention relates to flushing devices, and its object is to produce such a device which, shall be slow closing and noiseless, and also simple inconstruction and certain in operation.

In carrying out the invention I construct e casing which is divided at some convenient point into two main chambers by a fixed die phragm Each of these main chambers is further divided into two sub-chambers by pistons, or movable diaphragm, and the.

outlets therefrom, into the discharge, are controlled by valves.

Two of the sub-chambers of the device ere connected by an open passage way, and the other two sub-chambers are also connected by e passage way, the last mentioned paxage vzsy being controlled by e valve, and the last mentioned sub-chambers are iurther' connected by one or more open passage ways or adjustable leak passages.

The initiating valve is opened by hand, or otherwise, but all the other operations. including its closing, are automatic.

- the accompanying three sheets or drewing 1 have illustrated my invention.

igure 1 is a longitudinal section showing roost approved form of the apparatus.

e 1 a 2 is e cross section taken at the line 2, 2, of Fig. i.

3 is e longitudinal section showing the epparatus modified to the extent that the two movable diephragms or istons, ere not connected.

4; is e cross section teken on the line l, 4t, of 3, and is equally-s. section at the analogous point of i.

Fig: 5 is a ongitudinal section, showing.

the apparatus with flexible diaphragmsf instead er sliding diaphragms, or pistons.

Fig; 8 is a. cross section taken on the line;-

6, t, of Fig. 5.

. In the drawing; 1 and eretwo parts of the casing, which may bea'connected by the union joint at 3, or otherwise. At the fi junction of the parts 1 and 2,3is inserted the partition 4, which divides the interior of the shell or easing into tWQ pBJtS or main chembore, 7 and 9. 5 iso piston diaphragm in the chamber 7 of part 2, of the casing, and

6 is a piston in the chamber 9 of part 1 of the casmg. The piston 6 has a chamber which opens through the head of the piston into the chamber 9, and said head works v under the partition 4, so that fluid may pass from the duct or ducts 20, into or against the piston head for facilitating the return movement of the piston to its seat. These pistons or members divide the main chambers of the casing, into sub-chambers 8, and 10. The chambers 7 and 8 being above the fixed partition 4, and the chambers 9 and 10 being below the same. The service pipe Ads connected to the device at 11, and ad 'mits water directly into the sub-chamber 10, whence, if the valve 12 is openthe Water passes to the discharge outlet B. It will n observed that the valve 12 is connected directly to piston 5, and in the form of the device shown in Figs. fl and 2, also to piston o, by means-to be hereinafter described. lhus the valve 12 is operated by the movement oi the pistons to which it is connected.

There is one or more passages as 13, connecting the chambers 7 and 10, so that the pressures are equalized in those chambers, when the device is at rest. Also there is s passage 1%, connecting the chamber 7 with the discharge outlet B. This passage is is slightly larger than passage 13, so that when vboth are open the exhaust from chamber i will be greater than the supply.

Passage 12; is controlled which may be termed the initiating valve. This valve has a stem lfieztending through at stufing box 17, end terminating in a hand button 18, by pressure upon which it is opened. A spiral spring 19 automatically deck may be adjusted by's'imply changing the plug ijor one with a difierent sized ori- The operation of the parts thusfar described, 15 as follows: Apressure upon button -18 opens evolve 15, and water in the Patented Mnr. 18, 1919.

my a. valve 15,

' theiipositior of the device in draw 0 sheet, per; ittiiig water pass from the vice oe A to the ciiscl er e outiet .riieoiately upon closi Q of the valve 15 the spring 19, *oressare is removed from button 18, and therehv closes the out- Wat-er flowing passage 13 reits normal, and "d uncler that in- J' ing oil the from the chamber 7 c chamber thro stores th pressure 1;.(1 the piston moves flushes, closing valve outflow, The riovviivv so vemeot oi piston 5 drives the water fro e chamber 8 into the sub-chamber 9, t i ate upon piston 6 r the closing of alve 41. The nodes of Water from the see lasher 8 to the l 'oher 9 is slow, cvieg; to is taking place rough the leak oriiices 9,2, the passages 20 being closed by valve 21, and re MW iflsietu,

lo insure the prooer regist SE15 eel is, 111 the have par- L1 1 7 F L41 severe, as 2? say o control the upward movemeir and a protecting hood 29, mav he iii Fig. l and the piston 5 may orovicies vvr'h a or lag 3G- to contact As flexible and; sliclii dia'ohragms are' In the modification shown in 3 at, the valve 12 is connected only to the piston '8, and not to piston 5. As shown in Fig. 11

the pressure or" in the chamber 9 is depended uponto close that valve Without aicl from that in the chamber i. This will he readily uriclerstood from the foregoing by aiiy'comi 'etent mechanic ansiiieerl not he further clescrihetl,

"While it have reterreclto the spear and lower parts oi-the casing other partsflt vvill he understood that this refers ohly to maybe set for practical use ioei y KZOLWSH ter iii the i i-erase it will he chservecl that the small bypasses are entirely inclosed and protected, and cannot be tampered with, thus making the valve necessarily positive in its closing. l

setting up the device for operation the ssh-chamber 8 and the chamber 9 are filled vith vater or other liquid. Any loss from ieakage out of said chambers will he suppliec by leakage into-them.

Having thus described my invention, and embodiment of it, in full, clear and exact terms required by law, and lmovving that it comprises novel, useful and. valuable im provements in the art to which it pertains, here state that (lo not Wish to be limited to the precise construction and arrangements of the several parts, as herein set forth, as the same may he variously modified by a skilled mechanic Without departing from the spirit of the i veiitioii.

W I claim and desire to secure by Letters Patent of the Unit-co States, is the following, to-vvit tiating valve a passage 9 e valve with the outiet of casing, a par itiori havihg ducts dividing casino into tvvo chambers one of which is conn cted the inlet oi? asing: h passage, a valve loosely tea on partition for opening and losing "he rhictsaiicl having a stem projectiiig through the partition, ahcl means roovahle in each chamber by fluid pressure and cooperating with the partition valve in a flushing operation a flushing device, two-part casing, a partition CilViCilZlg the easing into tvvo giston'chamhers one of which has an initiating valve'opening, a pistes. seat in the other chamber, said casing parts having a pair of alihed channels, one channel of each pair forming a fluid passage extending from under the seat to the valve opening, an& the other channel of each pair forming a fluid passage extending from alcove the seat into the valved chamber 'helovv' the valve, and means for connecting the casing parts.-

4. lie afiashiiig device, aeas nga pas- I sage partition dividing the casmg into a lower-chamber and an upper chamoer provielecl' with an iiiitiatmg valve a rcemher' movahle iii the upper charaher lays-laid pressure and forming a suhchai her alcove the partition, a valve sapporterl 303v the partition and operated in the sub-chamber, and a member movable in the lower chamber and forming a sub-chamber in said lower chamher, said valves and said members cooperating under fluid pressure in a flushing operation.

5. In a flushing. device, a casing, a partition having ducts and dividing the easing into an upper. chamber and a lower chamher, a piston in the upper chamber, a Valve loosely mounted on the partition and working a su -chamber between the piston and the partition a piston in the lower chamber and forming a sub-chamber for the inlet and the. outlet of the casing.

5. In a flushing device, a casing, a partition having ducts and dividing the easing into two chambers, a fluid operated piston in one of the chambers, a valve mounted on the partition and working between'the partition and-the piston, and a fluid operated piston in the other chamber and havin a chambered head opposite the ducts an forming a valve for the inlet and the outlet of the casing.

7. A flushing device comprising a casing having an initiating valve and a passage connecting such valve opening with the outlet of the casing, a the casing and dividing it into two chambers one of which is connected with the inletof the casing by a passage, said chambers being connected by a fluid passage, and a check valve for opening and closingthe latter passage in a flushing operation.

8 A flushing device comprising a casing partition fixed ,within having an initiating valve and a assage con meeting the valve opening with t e outlet of the casing, a artition dividing the casing into two cham ers connected by a fluid passage, one of the chambers being connected with the inlet of the casing by a passage, a check valve permitting a oneway flow through said fluid passage, and means movable in each chamber by fluid pressure and cooperating with the check valve in a flushing operat on. 7

9. In a flushing device, a chamber, a partition fixed in the chamber, and a motor on each side of the partition' and adapted to alternately force liquid from one side tothe other of the partition in a flushing operation.

10. In a flushing device, a casing, a par tition dividing the easing into a lower chamber and an upper chamber provided with an initiating valve, a member movable in the upper chamber by fluid pressure and forming a sub-chamber, a check valve operated in the sub-chamber, and a member movable in the lower chamber and forming a subchamber under the partition, said valves and said members cooperating under fluid pressure in a flushin operation.

In testimony, 5121; I claim the foregoing I have hereto set my hand in the presence of twowitnesse's, this 6th day of May 1917.

DAVID E. GULICK. 

